<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
    div{
    	width: 100px;
    	height: 100px;
    	background-color: red;
    	border-radius: 50%;
    	text-align: center;
    	line-height: 100px;
    	font-size: 35px;
    }
    .test1{
    	display: none;
    }
    .test3{
    	opacity: 0;
    }
    .test5{
    	visibility: hidden;
    }
    </style>
</head>
<body>
    <div class="test">0</div>
    <div class="test1">1</div>
    <div class="test2">2</div>
    <div class="test3">3</div>
    <div class="test4">4</div>
    <div class="test5">5</div>
</body>
</html>